It's all layers. Separate the rings from the background, create layers, composite. This requires compositing, rotoscope or keying and color correcting skills. The key is the preproduction planning and the way the images are shot.

Another option is to create the rings ad 3D objects and edit them in a 3D app like C4D, Blender or even in the 3D effects pugs from 3rd party vendors like Video Copilot or Zaxworks.